In the low-density region, where VFF\(\sim \) DDFF, the NMFP+VFF, and NMFP+DDFF are close to each other as expected, and the difference gets larger as the density grows for all the cases. The effects of the NCR turn out to be critical throughout the densities, decreasing the NMFP by \(\sim 5\)  km on average. Again, the NNM does not make any significant contributions to the NMFP, being consistent with the DCS results. Taking into account that the radius of the NS whose mass is \(1.4\odot \)  is \(R_{1.4M_\odot } \lesssim 13\)  km [1]}, indicated by the horizontal shaded line, as for the results from the KIDS0 and KIDS-A models, the neutrino can not escape freely from the NS beyond \(\rho \approx 1.5 \rho _0\) . In contrast, the neutrino seldom experiences weak and EM interactions until it escapes from the NS for the KIDS0-m*87 and SLy4 models. For instance, there is almost no delay of the neutrino emission for \(R_{\rm NS}\approx 10\)  km because NMFP is always larger than \(R_{\rm NS}\) .
